US2989081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball cock valves
Assignee: Individual
•
Filing: 1957-08-19
•
Granted: 1961-06-20
•
Expires: 1977-08-19
Abstract
No abstract record available.
Inventors
- 👤 Horace W Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:41
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/30; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/7491; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2596534A
Cited
US746755A
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US1274924A
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US1630133A
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US2132030A
Cited
GB540411A
Cited
US2524142A
Cited
US2621885A
Cited
CH305208A
Cited
US2826215A
Cited
US2802481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |